Optimize Inflector

[xepozz]

We have introduced https://github.com/yiisoft/strings/blob/master/src/CombinedRegexp.php that helps with a loop of regexps. There are some places to apply CombinedRegexp:

• https://github.com/yiisoft/strings/blob/63aef52b3d8568af153bddc1f526994474d96074/src/Inflector.php#L439
• https://github.com/yiisoft/strings/blob/63aef52b3d8568af153bddc1f526994474d96074/src/Inflector.php#L418

[vjik]

User can override rules via withSingularizeRules() and withPluralizeRules() methods, and use regular expressions with different flags. It is do not allow us use CombinedRegexp here.

[xepozz]

I didn't get you

[vjik]

I didn't get you

CombinedRegexp uses same flags for all expressions, but inflector allow use expressions with different flags.